text: from brunodb.database import DBase
  from brunodb.bulk_load_postgres import bulk_load_cars, get_cars_file_name
  from brunodb.cars_example import get_cars_structure
  
  
  def test_bulk_load():
      config = {'db_type': 'postgres'}
      dbase = DBase(config)
      dbase.drop('cars')
      assert 'cars' not in dbase.tables
      bulk_load_cars(dbase)
      assert 'cars' in dbase.tables
      cars_list = list(dbase.query('cars'))
      assert len(cars_list) == 32
  
  
  def test_bulk_load_from_file():
      config = {'db_type': 'postgres'}
      dbase = DBase(config)
      dbase.drop('cars')
      assert 'cars' not in dbase.tables
      filename = get_cars_file_name()
      structure = get_cars_structure()
      dbase.create_and_load_table_from_csv(filename, structure, bulk_load=True)
      assert 'cars' in dbase.tables
      cars_list = list(dbase.query('cars'))
      assert len(cars_list) == 32
  